Saw set



Patented Apr. 3, 1923.

SAW SET.

Application filed` May 8,

To all whom t may 00u/cera:

-Be it known'that l, liLLrAM H. MACK,

f a citizen of the United States, residing .at

`Oak'Grove, in the'parish of Test Carroll and State of Louisiana, have invented certain new `and useful Improvements in Saw Sets; and l do hereby declare the following to be a full. clear. and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to improvements in saw sets and has for an object to provide a compact conveniently operated device of economical construction in which the progress of the action is open and may be clearly observed to get the desired pitch of swaging.

Other objects of the invention are to simplify the construction of saw sets generally, to provide a strong durable construction, to avoid injury to the saw teeth while accurately swaging the same and to render it a comparatively easy operation to perform this work without requiring any especial skill for the task and without involving any appreciable trouble and annoyance in the conduct thereof.

With the foregoing and other objects in view, the invention will be more fully described hereinafter, and will be more particularly pointed out in the claim appended hereto.

In the drawings, wherein like symbols refer to like or corresponding parts throughout the several views,

Fig. 1 is a side view of a saw set constructed according to the present invention;

Fig. 2 is a plan view of the same;

Fig. 3 is a bottom view of the device; and,

Fig. 4 shows a fragmentary section.

Referring more particularly to the drawings, 1 designates a beam having prongs 2 and 3 projecting downwardly at its ends to take into a block7 stump or the like indicated in dotted lines at 4.

The top surface of the beam 1 is generally level with the exception of a curved or inclined portion 5 near one end which constitutes an anvil for receiving the teeth of the saw which are indicated at 6. Pins 7 project laterally from the beam 1 near the anvil end to act as stops for the legs 8 of a yoke member 9 having a pivotal movement about a bolt or other fulcrum 10 which 1922. Serial No. 559,489.

passes laterallj7 through the central portion "of the beam 1 and through the free ends of the legs 8.

The head 10 of the yoke member extends upwardly at approximatelj7 right angles to the legs 8 and is provided with a pair of spaced perforated lugs 11 to sliding-ly receive a swaging plunger 12 having an enlarged head 13 to receive blows from a ham- "mer or other suitable implement. The plunger 12 is normally raised by the action of a coil spring 14 which is wound about the upper portion thereof and is confined between the upper lug 11 and the enlarged head 13. The upper movement of the plunger is limited by a pin 15 passing transversely therethrough and projecting into engagement with the lower surface of the upper lug 11.

In the use of the device, the beam 1 is initially set into a base 4, for instance a stump, by driving the prongs 2 and 3 into the wood. The prong 3, as indicated in Fig. 3, is preferably provided with flat extensive sides which lie substantially parallel with the sides of the beam 1, while the prong 2 has flat sides extending at right angles thereto. The prong 2 will therefore avoid any longitudinal movement or creeping of the beam, while the prong 3 will avoid lateral vibration or casual movement. In hammering the prong 2 into place, the yoke may be swung upwardly about its pivot point 10 to enable access to be had to the upper surface at this point.

A. saw is placed horizontally upon the beam 1 with an initial tooth resting upon the anvil 5 just beneath the plunger 12. The plunger head 13 is then struck a blow with a hammer and the plunger descends upon the tooth 6 and drives it down against the inclined anvil surface causing it to take a proper pitch.

The spring 14 returns the plunger to the upper position in readiness for the next blow and the saw is advanced through the device -tooth by tooth while the above operation is repeated.

The device maybe made of metal or other suitable material and it will be appreciated that with this implement, the setting of saw teeth becomes a simple matter and is attended with little eiiort while being carried out by one not necessarily experienced in this character of work.

The yoke, by virtue of its pivotal mounting on the pin, may be lifted when the saw is removed whereby to expose the anvil surface for planing and trimming as these surfaces become pitted and uneven in use. The surfaces are entirely free from interference With the yoke as the same is pivoted centrally of the beam and swings to the opposite end ot' said beam.

It is obvious that various changes and modifications may be made in the details of construction and design of the above specifically described embodiment of this invention Without departing from the spirit thereof, such changes and modifications being restricted only by the scope of the following claim.

having means to anchor it, in a support and.

provided With a sloping anvil face near one end'to receive the saw teeth, a yoke having legs straddling said elongated beam, a pivot passing through the inner ends of said legs and the middle portion of said beam Whereby to secure the yoke to the beam and permit the swinging of the yoke from one end to the other ofthe beam, an upstanding head connecting the outer ends of said legs, said head having spaced lugs overlying the anvil face of thebeam, a plunger mounted to reciprocate in said lugs,stop means projecting from the plunger between said lugs,

yield-able means to, hold the plunger normally in an elevatedposition, and rests projecting laterally from the beam near the anvil end thereof to receive said legs for freely supporting the same and said head.

l/VILLIAM HUGO MACK. 

